CARDWELL

OILFIELD MACHINES AND MACHINE TOOLS-NAMELY, HOISTS; [ PUMPS AND PUMP DRIVES; ] MASTS; DERRICKS; RIGS; [ ROTARY TABLE DRIVE ASSEMBLIES; SPUDDING ASSEMBLIES; ] CLUTCHES; [ CATHEADS; TRACTOR-MOUNTED BOOMS AND CRANES; SINGLE AND MULTIPLE ENGINE DRAW WORKS; ] WINCHES; [ VARIABLE SPEED DRIVES; CORE-DRILL SLUSHPUMP MOUNTINGS; BACK FILLERS; PIPE BENDERS; TRACTOR-TYPE GENERAL WELL SERVICING UNITS WITH VARIOUS ASSEMBLIES FOR CLEANOUT, DEEPENING, OR DRILLING IN WITH CABLE TOOLS, AND FOR ROTARY AND CORE DRILLING OPERATIONS ]